1.	Find .
		A.	15	B.	-14
		C.	-15	D.	14
		Hint
	2.	Solve the equation x2 = 0.81.
		A.	x = 0.9 or x = -0.9
		B.	x = -0.9 only
		C.	x = 0.9 only
		D.	none of these is correct
		Hint
	3.	Determine whether the number is rational or irrational.
		A.	neither	B.	irrational
		C.	rational	D.	both
		Hint
	4.	Simplify
		A.		B.
		C.		D.
		Hint
	5.	Simplify .
		A.		B.
		C.		D.
		Hint